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Finding the Fourth Proportional to 250.50, 345.40 and 171.79

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Solution

The fourth proportional to 250.50, 345.40 and 171.79 is: 236.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.50 : 345.40 = 171.79 : x
  2. Step 2: Convert to fraction form
    250.50/345.40 = 171.79/x
  3. Step 3: Cross multiply
    250.50x = 345.40 × 171.79
  4. Step 4: Simplify right side
    250.50x = 59,336.27
  5. Step 5: Solve for x
    x = 59,336.27/250.50
  6. Step 6: Final answer
    x = 236.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.